class_docstr: Leafs are basically tokens with a better API. Leafs exactly know where they
  were defined and what text preceeds them.
code: def get_first_leaf(self):
      return self
  
imports: import sys
  from abc import abstractmethod, abstractproperty
  from parso._compatibility import utf8_repr, encoding
  from parso.utils import split_lines
label_desc: Use image node_id 5 for calling the Leaf obj's underlying member method code with example usage: obj.get_first_leaf() and returns: self