code: def mathit(self):
      localctx = LaTeXParser.MathitContext(self, self._ctx, self.state)
      self.enterRule(localctx, 50, self.RULE_mathit)
      try:
          self.enterOuterAlt(localctx, 1)
          self.state = 327
          self.match(LaTeXParser.CMD_MATHIT)
          self.state = 328
          self.match(LaTeXParser.L_BRACE)
          self.state = 329
          self.mathit_text()
          self.state = 330
          self.match(LaTeXParser.R_BRACE)
      except RecognitionException as re:
          localctx.exception = re
          self._errHandler.reportError(self, re)
          self._errHandler.recover(self, re)
      finally:
          self.exitRule()
      return localctx
  
imports: from antlr4 import *
  from io import StringIO
  import sys
label_desc: Use image node_id 27 for calling the LaTeXParser obj's underlying member method code with example usage: obj.mathit() and returns: localctx