class_docstr: Base class to add information on a node to improve code generation. 
class_docstr_tok: ["Base","class","to","add","information","on","a","node","to","improve","code","generation","."]
docstr: Initialize content of these metadata. 
docstr_tok: ["Initialize","content","of","these","metadata","."]
code: def __init__(self):
      """Initialize content of these metadata."""
      self.data = list()
      self._fields = ("data",)
      super(Metadata, self).__init__()
  
file_path: pythran/pythran/metadata.py
imports: from gast import AST
label_desc: Use image node_id 1 to create a new Metadata object from inherited base classes: AST with example: obj = Metadata()