code: def sizeof(arg):
      """Generate of FunctionCall instance for calling 'sizeof'
  
      Examples
      ========
  
      >>> from sympy.codegen.ast import real
      >>> from sympy.codegen.cnodes import sizeof
      >>> from sympy import ccode
      >>> ccode(sizeof(real))
      'sizeof(double)'
      """
      return FunctionCall(
          "sizeof", [String(arg) if isinstance(arg, str) else arg]
      )
  
imports: from sympy.codegen.ast import Attribute, Declaration, Node, String, Token, Type, none, FunctionCall, CodeBlock
  from sympy.core.basic import Basic
  from sympy.core.containers import Tuple
  from sympy.core.sympify import sympify
label_desc: Use image node_id 2 for calling a global function with example usage: sizeof(arg) and returns: FunctionCall