class_docstr: Convenience class to encapsulate tractogram file format.
class_docstr_tok: ["Convenience","class","to","encapsulate","tractogram","file","format","."]
docstr: Returns an empty header for this streamlines file format.
docstr_tok: ["Returns","an","empty","header","for","this","streamlines","file","format","."]
code: def create_empty_header(cls):
      """Returns an empty header for this streamlines file format."""
      return {}
  
imports: from abc import ABC, abstractmethod
  from .header import Field
label_desc: Use image node_id 7 for calling the TractogramFile obj's underlying member method code with example usage: obj.create_empty_header(cls) and returns: dict