SlidingLayout | bouncing effect similar to WeChat WebView

def __init__(self, node, function, enclosing_graph, first_function_input,
               type_attribute, function_attributes):
    """Initializes a _FunctionCaller.

    Args:
      node: As in _Node.
      function: As in _Node.
      enclosing_grap  

def _call_location():
  """Extracts the caller filename and line number as a string.

  Returns:
    A string describing the caller source location.
  """
  frame = tf_inspect.currentframe()
  assert frame.f_back.f_code.co_name == '_tfmw_add_deprecat  

def _get_caller(offset=3):
  """Returns a code and frame object for the lowest non-logging stack frame."""
  # Use sys._getframe().  This avoids creating a traceback object.
  # pylint: disable=protected-access
  f = _sys._getframe(offset)
  # pylint