class_docstr: Implements the TAB-completion for the %%opts magic.
code: def _inside_delims(cls, line, opener, closer):
      return (line.count(opener) - line.count(closer)) % 2
  
imports: import sys
  import time
  from IPython.core.magic import Magics, line_cell_magic, line_magic, magics_class
  from IPython.display import HTML, display
  from ..core.options import Options, Store, StoreOptions, options_policy
  from ..core.pprint import InfoPrinter
  from ..operation import Compositor
  from IPython.core import page
label_desc: Use image node_id 3 for calling the OptsCompleter obj's underlying member method code with example usage: obj._inside_delims(cls, line, opener, closer) and returns: unknown