// =================== DO NOT EDIT THIS FILE ====================
   //  Generated by Modello Velocity from model.vm
   //  template, any modifications will be overwritten.
   // ==============================================================
   package org.apache.maven.api.model;
   
   import java.io.Serializable;
   import java.util.ArrayList;
   import java.util.Collection;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Objects;
  import java.util.Optional;
  import java.util.Set;
  import java.util.stream.Collectors;
  import java.util.stream.Stream;
  import org.apache.maven.api.annotations.Experimental;
  import org.apache.maven.api.annotations.Generated;
  import org.apache.maven.api.annotations.Immutable;
  import org.apache.maven.api.annotations.Nonnull;
  import org.apache.maven.api.annotations.NotThreadSafe;
  import org.apache.maven.api.annotations.ThreadSafe;
  
  /**
   * Base class for the {@code Model} and the {@code Profile} objects.
   */
  @Experimental
  @Generated @ThreadSafe @Immutable
  public class ModelBase
      implements Serializable, InputLocationTracker
  {
      /**
       * @deprecated Use {@link #subprojects} instead.
       */
      @Deprecated(since = "4.0.0")
      final List<String> modules;
      /**
       * The subprojects (formerly called modules) to build as a part of this
       * project. Each subproject listed is a relative path to the directory containing the subproject.
       * To be consistent with the way default URLs are calculated from parent, it is recommended
       * to have subproject names match artifact ids.
       */
      final List<String> subprojects;
      /**
       * Distribution information for a project that enables deployment of the site
       * and artifacts to remote web servers and repositories respectively.
       */
      final DistributionManagement distributionManagement;
      /**
       * Properties that can be used throughout the POM as a substitution, and
       * are used as filters in resources if enabled.
       * The format is {@code <name>value</name>}.
       */
      final Map<String, String> properties;
      /**
       * Default dependency information for projects that inherit from this one. The
       * dependencies in this section are not immediately resolved. Instead, when a POM derived
       * from this one declares a dependency described by a matching groupId and artifactId, the
       * version and other values from this section are used for that dependency if they were not
       * already specified.
       */
      final DependencyManagement dependencyManagement;
      /**
       * This element describes all the dependencies associated with a project.
       * These dependencies are used to construct a classpath for your
       * project during the build process. They are automatically downloaded from the
       * repositories defined in this project.
       * 
       * @see <a href="https://maven.apache.org/guides/introduction/introduction-to-dependency-mechanism.html">Dependency mechanism</a>
       */
      final List<Dependency> dependencies;
      /**
       * The lists of the remote repositories for discovering dependencies and
       * extensions.
       */
      final List<Repository> repositories;
      /**
       * The lists of the remote repositories for discovering plugins for builds and
       * reports.
       */
      final List<Repository> pluginRepositories;
      /**
       * This element includes the specification of report plugins to use
       * to generate the reports on the Maven-generated site.
       * These reports will be run when a user executes {@code mvn site}.
       * All the reports will be included in the navigation bar for browsing.
       */
      final Reporting reporting;
      /** Locations */
      final Map<Object, InputLocation> locations;
      /** Location tracking */
      final InputLocation importedFrom;
  
      /**
        * Constructor for this class, to be called from its subclasses and {@link Builder}.
        * @see Builder#build()
        */
     protected ModelBase(Builder builder) {
         this.modules = ImmutableCollections.copy(builder.modules != null ? builder.modules : (builder.base != null ? builder.base.modules : null));
         this.subprojects = ImmutableCollections.copy(builder.subprojects != null ? builder.subprojects : (builder.base != null ? builder.base.subprojects : null));
         this.distributionManagement = builder.distributionManagement != null ? builder.distributionManagement : (builder.base != null ? builder.base.distributionManagement : null);
         this.properties = ImmutableCollections.copy(builder.properties != null ? builder.properties : (builder.base != null ? builder.base.properties : null));
         this.dependencyManagement = builder.dependencyManagement != null ? builder.dependencyManagement : (builder.base != null ? builder.base.dependencyManagement : null);
         this.dependencies = ImmutableCollections.copy(builder.dependencies != null ? builder.dependencies : (builder.base != null ? builder.base.dependencies : null));
         this.repositories = ImmutableCollections.copy(builder.repositories != null ? builder.repositories : (builder.base != null ? builder.base.repositories : null));
         this.pluginRepositories = ImmutableCollections.copy(builder.pluginRepositories != null ? builder.pluginRepositories : (builder.base != null ? builder.base.pluginRepositories : null));
         this.reporting = builder.reporting != null ? builder.reporting : (builder.base != null ? builder.base.reporting : null);
         this.locations = builder.computeLocations();
         this.importedFrom = builder.importedFrom;
     }
 
     /**
      * @deprecated Use {@link #subprojects} instead.
      *
      * @return a {@code List<String>}
      */
     @Deprecated(since = "4.0.0")
     @Nonnull
     public List<String> getModules() {
         return this.modules;
     }
 
     /**
      * The subprojects (formerly called modules) to build as a part of this
      * project. Each subproject listed is a relative path to the directory containing the subproject.
      * To be consistent with the way default URLs are calculated from parent, it is recommended
      * to have subproject names match artifact ids.
      *
      * @return a {@code List<String>}
      */
     @Nonnull
     public List<String> getSubprojects() {
         return this.subprojects;
     }
 
     /**
      * Distribution information for a project that enables deployment of the site
      * and artifacts to remote web servers and repositories respectively.
      *
      * @return a {@code DistributionManagement}
      */
     public DistributionManagement getDistributionManagement() {
         return this.distributionManagement;
     }
 
     /**
      * Properties that can be used throughout the POM as a substitution, and
      * are used as filters in resources if enabled.
      * The format is {@code <name>value</name>}.
      *
      * @return a {@code Map<String, String>}
      */
     @Nonnull
     public Map<String, String> getProperties() {
         return this.properties;
     }
 
     /**
      * Default dependency information for projects that inherit from this one. The
      * dependencies in this section are not immediately resolved. Instead, when a POM derived
      * from this one declares a dependency described by a matching groupId and artifactId, the
      * version and other values from this section are used for that dependency if they were not
      * already specified.
      *
      * @return a {@code DependencyManagement}
      */
     public DependencyManagement getDependencyManagement() {
         return this.dependencyManagement;
     }
 
     /**
      * This element describes all the dependencies associated with a project.
      * These dependencies are used to construct a classpath for your
      * project during the build process. They are automatically downloaded from the
      * repositories defined in this project.
      * 
      * @see <a href="https://maven.apache.org/guides/introduction/introduction-to-dependency-mechanism.html">Dependency mechanism</a>
      *
      * @return a {@code List<Dependency>}
      */
     @Nonnull
     public List<Dependency> getDependencies() {
         return this.dependencies;
     }
 
     /**
      * The lists of the remote repositories for discovering dependencies and
      * extensions.
      *
      * @return a {@code List<Repository>}
      */
     @Nonnull
     public List<Repository> getRepositories() {
         return this.repositories;
     }
 
     /**
      * The lists of the remote repositories for discovering plugins for builds and
      * reports.
      *
      * @return a {@code List<Repository>}
      */
     @Nonnull
     public List<Repository> getPluginRepositories() {
         return this.pluginRepositories;
     }
 
     /**
      * This element includes the specification of report plugins to use
      * to generate the reports on the Maven-generated site.
      * These reports will be run when a user executes {@code mvn site}.
      * All the reports will be included in the navigation bar for browsing.
      *
      * @return a {@code Reporting}
      */
     public Reporting getReporting() {
         return this.reporting;
     }
 
     /**
      * Gets the location of the specified field in the input source.
      */
     public InputLocation getLocation(Object key) {
         return locations.get(key);
     }
 
     /**
      * Gets the keys of the locations of the input source.
      */
     public Set<Object> getLocationKeys() {
         return locations.keySet();
     }
 
     protected Stream<Object> getLocationKeyStream() {
         return locations.keySet().stream();
     }
 
     /**
      * Gets the input location that caused this model to be read.
      */
     public InputLocation getImportedFrom() {
         return importedFrom;
     }
 
     /**
      * Creates a new builder with this object as the basis.
      *
      * @return a {@code Builder}
      */
     @Nonnull
     public Builder with() {
         return newBuilder(this);
     }
     /**
      * Creates a new {@code ModelBase} instance using the specified modules.
      *
      * @param modules the new {@code Collection<String>} to use
      * @return a {@code ModelBase} with the specified modules
      */
     @Deprecated(since = "4.0.0")
     @Nonnull
     public ModelBase withModules(Collection<String> modules) {
         return newBuilder(this, true).modules(modules).build();
     }
     /**
      * Creates a new {@code ModelBase} instance using the specified subprojects.
      *
      * @param subprojects the new {@code Collection<String>} to use
      * @return a {@code ModelBase} with the specified subprojects
      */
     @Nonnull
     public ModelBase withSubprojects(Collection<String> subprojects) {
         return newBuilder(this, true).subprojects(subprojects).build();
     }
     /**
      * Creates a new {@code ModelBase} instance using the specified distributionManagement.
      *
      * @param distributionManagement the new {@code DistributionManagement} to use
      * @return a {@code ModelBase} with the specified distributionManagement
      */
     @Nonnull
     public ModelBase withDistributionManagement(DistributionManagement distributionManagement) {
         return newBuilder(this, true).distributionManagement(distributionManagement).build();
     }
     /**
      * Creates a new {@code ModelBase} instance using the specified properties.
      *
      * @param properties the new {@code Map<String, String>} to use
      * @return a {@code ModelBase} with the specified properties
      */
     @Nonnull
     public ModelBase withProperties(Map<String, String> properties) {
         return newBuilder(this, true).properties(properties).build();
     }
     /**
      * Creates a new {@code ModelBase} instance using the specified dependencyManagement.
      *
      * @param dependencyManagement the new {@code DependencyManagement} to use
      * @return a {@code ModelBase} with the specified dependencyManagement
      */
     @Nonnull
     public ModelBase withDependencyManagement(DependencyManagement dependencyManagement) {
         return newBuilder(this, true).dependencyManagement(dependencyManagement).build();
     }
     /**
      * Creates a new {@code ModelBase} instance using the specified dependencies.
      *
      * @param dependencies the new {@code Collection<Dependency>} to use
      * @return a {@code ModelBase} with the specified dependencies
      */
     @Nonnull
     public ModelBase withDependencies(Collection<Dependency> dependencies) {
         return newBuilder(this, true).dependencies(dependencies).build();
     }
     /**
      * Creates a new {@code ModelBase} instance using the specified repositories.
      *
      * @param repositories the new {@code Collection<Repository>} to use
      * @return a {@code ModelBase} with the specified repositories
      */
     @Nonnull
     public ModelBase withRepositories(Collection<Repository> repositories) {
         return newBuilder(this, true).repositories(repositories).build();
     }
     /**
      * Creates a new {@code ModelBase} instance using the specified pluginRepositories.
      *
      * @param pluginRepositories the new {@code Collection<Repository>} to use
      * @return a {@code ModelBase} with the specified pluginRepositories
      */
     @Nonnull
     public ModelBase withPluginRepositories(Collection<Repository> pluginRepositories) {
         return newBuilder(this, true).pluginRepositories(pluginRepositories).build();
     }
     /**
      * Creates a new {@code ModelBase} instance using the specified reporting.
      *
      * @param reporting the new {@code Reporting} to use
      * @return a {@code ModelBase} with the specified reporting
      */
     @Nonnull
     public ModelBase withReporting(Reporting reporting) {
         return newBuilder(this, true).reporting(reporting).build();
     }
 
     /**
      * Creates a new {@code ModelBase} instance.
      * Equivalent to {@code newInstance(true)}.
      * @see #newInstance(boolean)
      *
      * @return a new {@code ModelBase}
      */
     @Nonnull
     public static ModelBase newInstance() {
         return newInstance(true);
     }
 
     /**
      * Creates a new {@code ModelBase} instance using default values or not.
      * Equivalent to {@code newBuilder(withDefaults).build()}.
      *
      * @param withDefaults the boolean indicating whether default values should be used
      * @return a new {@code ModelBase}
      */
     @Nonnull
     public static ModelBase newInstance(boolean withDefaults) {
         return newBuilder(withDefaults).build();
     }
 
     /**
      * Creates a new {@code ModelBase} builder instance.
      * Equivalent to {@code newBuilder(true)}.
      * @see #newBuilder(boolean)
      *
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder() {
         return newBuilder(true);
     }
 
     /**
      * Creates a new {@code ModelBase} builder instance using default values or not.
      *
      * @param withDefaults the boolean indicating whether default values should be used
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder(boolean withDefaults) {
         return new Builder(withDefaults);
     }
 
     /**
      * Creates a new {@code ModelBase} builder instance using the specified object as a basis.
      * Equivalent to {@code newBuilder(from, false)}.
      *
      * @param from the {@code ModelBase} instance to use as a basis
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder(ModelBase from) {
         return newBuilder(from, false);
     }
 
     /**
      * Creates a new {@code ModelBase} builder instance using the specified object as a basis.
      *
      * @param from the {@code ModelBase} instance to use as a basis
      * @param forceCopy the boolean indicating if a copy should be forced
      * @return a new {@code Builder}
      */
     @Nonnull
     public static Builder newBuilder(ModelBase from, boolean forceCopy) {
         return new Builder(from, forceCopy);
     }
 
     /**
      * Builder class used to create ModelBase instances.
      * @see #with()
      * @see #newBuilder()
      */
     @NotThreadSafe
     public static class Builder
     {
         ModelBase base;
         Collection<String> modules;
         Collection<String> subprojects;
         DistributionManagement distributionManagement;
         Map<String, String> properties;
         DependencyManagement dependencyManagement;
         Collection<Dependency> dependencies;
         Collection<Repository> repositories;
         Collection<Repository> pluginRepositories;
         Reporting reporting;
         Map<Object, InputLocation> locations;
         InputLocation importedFrom;
 
         protected Builder(boolean withDefaults) {
             if (withDefaults) {
             }
         }
 
         protected Builder(ModelBase base, boolean forceCopy) {
             if (forceCopy) {
                 this.modules = base.modules;
                 this.subprojects = base.subprojects;
                 this.distributionManagement = base.distributionManagement;
                 this.properties = base.properties;
                 this.dependencyManagement = base.dependencyManagement;
                 this.dependencies = base.dependencies;
                 this.repositories = base.repositories;
                 this.pluginRepositories = base.pluginRepositories;
                 this.reporting = base.reporting;
                 this.locations = base.locations;
                 this.importedFrom = base.importedFrom;
             } else {
                 this.base = base;
             }
         }
 
         @Deprecated(since = "4.0.0")
         @Nonnull
         public Builder modules(Collection<String> modules) {
             this.modules = modules;
             return this;
         }
 
         @Nonnull
         public Builder subprojects(Collection<String> subprojects) {
             this.subprojects = subprojects;
             return this;
         }
 
         @Nonnull
         public Builder distributionManagement(DistributionManagement distributionManagement) {
             this.distributionManagement = distributionManagement;
             return this;
         }
 
         @Nonnull
         public Builder properties(Map<String, String> properties) {
             this.properties = properties;
             return this;
         }
 
         @Nonnull
         public Builder dependencyManagement(DependencyManagement dependencyManagement) {
             this.dependencyManagement = dependencyManagement;
             return this;
         }
 
         @Nonnull
         public Builder dependencies(Collection<Dependency> dependencies) {
             this.dependencies = dependencies;
             return this;
         }
 
         @Nonnull
         public Builder repositories(Collection<Repository> repositories) {
             this.repositories = repositories;
             return this;
         }
 
         @Nonnull
         public Builder pluginRepositories(Collection<Repository> pluginRepositories) {
             this.pluginRepositories = pluginRepositories;
             return this;
         }
 
         @Nonnull
         public Builder reporting(Reporting reporting) {
             this.reporting = reporting;
             return this;
         }
 
 
         @Nonnull
         public Builder location(Object key, InputLocation location) {
             if (location != null) {
                 if (!(this.locations instanceof HashMap)) {
                     this.locations = this.locations != null ? new HashMap<>(this.locations) : new HashMap<>();
                 }
                 this.locations.put(key, location);
             }
             return this;
         }
 
         @Nonnull
         public Builder importedFrom(InputLocation importedFrom) {
             this.importedFrom = importedFrom;
             return this;
         }
 
         @Nonnull
         public ModelBase build() {
             // this method should not contain any logic other than creating (or reusing) an object in order to ease subclassing
             if (base != null
                     && (modules == null || modules == base.modules)
                     && (subprojects == null || subprojects == base.subprojects)
                     && (distributionManagement == null || distributionManagement == base.distributionManagement)
                     && (properties == null || properties == base.properties)
                     && (dependencyManagement == null || dependencyManagement == base.dependencyManagement)
                     && (dependencies == null || dependencies == base.dependencies)
                     && (repositories == null || repositories == base.repositories)
                     && (pluginRepositories == null || pluginRepositories == base.pluginRepositories)
                     && (reporting == null || reporting == base.reporting)
             ) {
                 return base;
             }
             return new ModelBase(this);
         }
 
         Map<Object, InputLocation> computeLocations() {
             Map<Object, InputLocation> newlocs = locations != null ? locations : Map.of();
             Map<Object, InputLocation> oldlocs = base != null ? base.locations : Map.of();
             if (newlocs.isEmpty()) {
                 return Map.copyOf(oldlocs);
             }
             if (oldlocs.isEmpty()) {
                 return Map.copyOf(newlocs);
             }
             return Stream.concat(newlocs.entrySet().stream(), oldlocs.entrySet().stream())
                     // Keep value from newlocs in case of duplicates
                     .collect(Collectors.toUnmodifiableMap(Map.Entry::getKey, Map.Entry::getValue, (v1, v2) -> v1));
         }
     }
 
 }