class_docstr: Raised when input data cannot be merged into a variable font.
code: def __init__(self, merger=None, **kwargs):
      self.merger = merger
      if not kwargs:
          kwargs = {}
      if "stack" in kwargs:
          self.stack = kwargs["stack"]
          del kwargs["stack"]
      else:
          self.stack = []
      self.cause = kwargs
  
imports: import textwrap
label_desc: Use image node_id 1 to create a new VarLibMergeError object from inherited base classes: VarLibError with example: obj = VarLibMergeError(merger)