List<ByteSource> sources = new ArrayList<>();
    int start = 0;
    for (Integer span : spans) {
      sources.add(newByteSource(start, span));
      start += span;
    }
    ByteSource joined = ByteSource.concat(sources);
    assertTrue(newByteSource(0, start).contentEquals(joined));
  }

  public void testReadSingleByte() throws Exception {
    ByteSource source = newByteSource(0, 10);

                public class Source {
                    public Source(@Nullable String some) {}
                    @Nullable public String nonFinalField = null;
                    public String foo(@Nullable String bar) { return "some"; }
                }
            """,
            v2 = """
                public class Source {
                    public Source(String some) {}

#!/usr/bin/env bash
# Copyright 2018 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

SOURCE="${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do
	DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
	SOURCE="$(readlink "$SOURCE")"
	[[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE"
done
DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"

# Increase the V8 stack size from the default of 984K

    assertEquals(STRING.length(), source.copyTo(sink));
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());

    assertEquals(STRING, sink.getString());
  }

  public void testRead_toString() throws IOException {
    assertEquals(STRING, source.read());
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
  }

        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()

     * then the behavior depends on the {@code ProjectManager} implementation.
     * It may do nothing or thrown {@linkplain IllegalArgumentException}.
     *
     * @param project the project to update
     * @param source the source to add
     * @throws IllegalArgumentException if this project manager rejects the given source because of conflict
     *

    /**
     * Gets the user toolchains source.
     *
     * @return The user toolchains source or {@code null} if none.
     */
    Source getUserToolchainsSource();

    /**
     * Sets the user toolchains source. If both user toolchains and a global toolchains are given, the user toolchains
     * take precedence.
     *

        // Find the index of the original SourceRoot
        int index = -1;
        for (int i = 0; i < sourcesList.size(); i++) {
            SourceRoot source = sourcesList.get(i);
            if (source.scope() == originalSourceRoot.scope()
                    && source.language() == originalSourceRoot.language()

	dm.Lock(id, source)
	time.Sleep(time.Duration(10+(rand.Float32()*50)) * time.Millisecond)
	dm.Unlock(t.Context())

	dm.Lock(id, source)
	time.Sleep(time.Duration(10+(rand.Float32()*50)) * time.Millisecond)
	dm.Unlock(t.Context())

	dm.Lock(id, source)
	time.Sleep(time.Duration(10+(rand.Float32()*50)) * time.Millisecond)
	dm.Unlock(t.Context())

	dm.Lock(id, source)
	time.Sleep(time.Duration(10+(rand.Float32()*50)) * time.Millisecond)

    private var closed = false
    private var noMoreParts = false

    /** This is only part that's allowed to read from the underlying source. */
    private var currentPart: PartSource? = null

    @Throws(IOException::class)
    constructor(response: ResponseBody) : this(
      source = response.source(),
      boundary =
        response.contentType()?.parameter("boundary")