protected boolean isUrl( String path ) {
    return path.matches( "^[\\w]+://.*" );
  }
@Test
  public void testIsUrl() {
    assertTrue( testInstance.isUrl( "hc://test/test.txt" ) );
    assertTrue( testInstance.isUrl( "pvfs://test/test.txt" ) );
    assertTrue( testInstance.isUrl( "s3://test/test.txt" ) );
    assertFalse( testInstance.isUrl( "C:\\\\test\\test.txt " ) );
    assertFalse( testInstance.isUrl( "/test/test.txt " ) );

  }