code: def determine_block_hints(self, text):
      hints = ""
      if text:
          if text[0] in " \n\x85\u2028\u2029":
              hints += str(self.best_indent)
          if text[-1] not in "\n\x85\u2028\u2029":
              hints += "-"
          elif len(text) == 1 or text[-2] in "\n\x85\u2028\u2029":
              hints += "+"
      return hints
  
imports: from .error import YAMLError
  from .events import *
label_desc: Use image node_id 56 for calling the Emitter obj's underlying member method code with example usage: obj.determine_block_hints(text) and returns: hints