Height() int

	// ReadTiles returns the data for each requested tile.
	// If ReadTiles returns err == nil, it must also return
	// a data record for each tile (len(data) == len(tiles))
	// and each data record must be the correct length
	// (len(data[i]) == tiles[i].W*HashSize).
	//
	// An implementation of ReadTiles typically reads
	// them from an on-disk cache or else from a remote

// The separate type avoids exposing the ReadTiles and SaveTiles
// methods on Client itself.
type tileReader struct {
	c *Client
}

func (r *tileReader) Height() int {
	return r.c.tileHeight
}

// ReadTiles reads and returns the requested tiles,
// either from the on-disk cache or the server.
func (r *tileReader) ReadTiles(tiles []tlog.Tile) ([][]byte, error) {

            ImmutableCapabilities capabilities = readCapabilities(decoder);
            boolean isExternalVariant = decoder.readBoolean();
            ImmutableList<? extends ModuleComponentArtifactMetadata> artifacts = readFiles(decoder, metadata.getId());

            RealisedConfigurationMetadata configurationMetadata = new RealisedConfigurationMetadata(metadata.getId(), configurationName, configuration.isTransitive(), configuration.isVisible(),

            if (hasExplicitExcludes) {
                excludes = ImmutableList.copyOf(readMavenExcludes(decoder));
            }
            ImmutableList<? extends ModuleComponentArtifactMetadata> artifacts = readFiles(decoder, metadata.getId());

            RealisedConfigurationMetadata configurationMetadata = new RealisedConfigurationMetadata(
                metadata.getId(),
                configurationName,

        return new GradleDependencyMetadata(selector, excludes, constraint, endorsing, reason, force, artifact);
    }

    protected ImmutableList<? extends ModuleComponentArtifactMetadata> readFiles(Decoder decoder, ModuleComponentIdentifier componentIdentifier) throws IOException {
        ImmutableList.Builder<ModuleComponentArtifactMetadata> artifacts = new ImmutableList.Builder<>();