class_docstr: Lexer for Prolog files.
code: def analyse_text(text):
      return ":-" in text
  
file_path: catboost/contrib/python/Pygments/py2/pygments/lexers/prolog.py
imports: import re
  from pygments.lexer import RegexLexer, bygroups
  from pygments.token import Text, Comment, Operator, Keyword, Name, String, Number, Punctuation
label_desc: Use image node_id 1 for calling the PrologLexer obj's underlying member method code with example usage: obj.analyse_text(text) and returns: unknown