code: def p_casecontent_statements(self, p):
          'casecontent_statements : casecontent_statements casecontent_statement'
          p[0] = p[1] + (p[2],)
          p.set_lineno(0, p.lineno(1)f p_casecontent_statements(self, p):
          'casecontent_statements : casecontent_statements casecontent_statement'
          p[0] = p[1] + (p[2],)
          p.set_lineno(0, p.lineno(1))
docs: casecontent_statements : casecontent_statements casecontent_statement