code: def is_month_start() -> IsMonthStart:
      """
      Return whether a given value is a month start
      """
      return IsMonthStart()
  
imports: from typing import Any, TYPE_CHECKING, Optional
  import pandas
  from .ASTPredicate import ASTPredicate
label_desc: Use image node_id 1 for calling a global function with example usage: is_month_start() and returns: IsMonthStart