code: def expect_scalar(self):
      self.increase_indent(flow=True)
      self.process_scalar()
      self.indent = self.indents.pop()
      self.state = self.states.pop()
  
imports: from .error import YAMLError
  from .events import *
label_desc: Use image node_id 15 for calling the Emitter obj's underlying member method code with example usage: obj.expect_scalar() without return types