code: def injectable_definition(inj_name):
      
      inj_type = orca.injectable_type(inj_name)
  
      if inj_type == 'variable':
          return jsonify(type='variable')
      else:
          filename, lineno, source = \
              orca.get_injectable_func_source_data(inj_name)
          html = highlight(source, PythonLexer(), HtmlFormatter())
          return jsonify(
              type='function', filename=filename, lineno=lineno, text=source,
              html=html)
docs: Get the source of an injectable function.
  
      If an injectable is a registered Python variable and not a function
      then all that is returned is {'type': 'variable'}.
  
      If the column is a registered function then the JSON returned has keys
      "type", "filename", "lineno", "text", and "html". "text" is the raw
      text of the function, "html" has been marked up by Pygments.