public final int countDataSchemeSpecificParts(){
  return mDataSchemeSpecificParts != null ? mDataSchemeSpecificParts.size() : 0;
}

public final int countDataSchemeSpecificParts ( ) { return mDataSchemeSpecificParts != null ? mDataSchemeSpecificParts . size ( ) : 0 ; }
return the number of data scheme specific parts in the filter .
