* Returns a view of a slice of this byte source that is at most {@code length} bytes long
   * starting at the given {@code offset}. If {@code offset} is greater than the size of this
   * source, the returned source will be empty. If {@code offset + length} is greater than the size
   * of this source, the returned source will contain the slice starting at {@code offset} and
   * ending at the end of this source.
   *

        // merge implicitly assumes that merge is only called on the same GAV and does not perform any validation here!
        Metadata source = new Metadata();
        source.setArtifactId("source-artifact");
        source.setGroupId("source-group");
        source.setVersion("2.0");
        assertFalse(target.merge(source));
        assertEquals("myArtifact", target.getArtifactId());
        assertEquals("myGroup", target.getGroupId());

        if (!source.isEmpty()) {
          return false;
        }
      }
      return true;
    }

    @Override
    public Optional<Long> lengthIfKnown() {
      long result = 0L;
      for (CharSource source : sources) {
        Optional<Long> lengthIfKnown = source.lengthIfKnown();
        if (!lengthIfKnown.isPresent()) {
          return Optional.absent();
        }

11/source/apache-maven-3.9.11-src.zip https://archive.apache.org/dist/maven/maven-3/3.9.11/source/apache-maven-3.9.11-src.tar.gz Apache Maven 3.9.10 2025-06-01 3.9.10 https://archive.apache.org/dist/maven/maven-3/3.9.10/binaries/apache-maven-3.9.10-bin.zip https://archive.apache.org/dist/maven/maven-3/3.9.10/binaries/apache-maven-3.9.10-bin.tar.gz https://archive.apache.org/dist/maven/maven-3/3.9.10/source/apache-maven-3.9.10-src.zip https://archive.apache.org/dist/maven/maven-3/3.9.10/source/ap...

    }

    /**
     * Adds a source to the message.
     *
     * @param source the source to add
     */
    public void addSource(final ChatSource source) {
        if (sources == null) {
            sources = new ArrayList<>();
        }
        sources.add(source);
    }

    /**
     * Checks if this is a user message.
     *
     * @return true if this is a user message

        /**
         * Sets the source of the project to build.
         * This is an alternative to specifying a path, allowing the project to be built from
         * a model source such as a string or input stream.
         *
         * @param source the source of the project
         * @return this builder instance
         */
        public ProjectBuilderRequestBuilder source(Source source) {
            this.source = source;

        return builder(requireNonNull(request, "request cannot be null"))
                .source(requireNonNull(source, "source cannot be null"))
                .build();
    }

    @Nonnull
    static ModelBuilderRequest build(@Nonnull Session session, @Nonnull ModelSource source) {
        return builder()

  }

  public void testContentEquals() throws IOException {
    assertTrue(source.contentEquals(source));
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());

    ByteSource equalSource = new TestByteSource(bytes);
    assertTrue(source.contentEquals(equalSource));
    assertTrue(new TestByteSource(bytes).contentEquals(source));

  }

  public void testContentEquals() throws IOException {
    assertTrue(source.contentEquals(source));
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());

    ByteSource equalSource = new TestByteSource(bytes);
    assertTrue(source.contentEquals(equalSource));
    assertTrue(new TestByteSource(bytes).contentEquals(source));

	// S3 extensions
	AmzCopySourceIfModifiedSince   = "x-amz-copy-source-if-modified-since"
	AmzCopySourceIfUnmodifiedSince = "x-amz-copy-source-if-unmodified-since"

	AmzCopySourceIfNoneMatch = "x-amz-copy-source-if-none-match"
	AmzCopySourceIfMatch     = "x-amz-copy-source-if-match"

	AmzCopySource                 = "X-Amz-Copy-Source"
	AmzCopySourceVersionID        = "X-Amz-Copy-Source-Version-Id"