<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _ResolveContext(self, context, name, raw_data, path=None):
 """Returns the config options active under this context."""

    if path is None:
      path = []

    for element in context:
      if element not in self.valid_contexts:
        raise InvalidContextError("Invalid context specified: %s" % element)

      if element in raw_data:
        context_raw_data = raw_data[element]

        value = context_raw_data.get(name)
        if value is not None:
          if isinstance(value, string_types):
            value = value.strip()

          yield context_raw_data, value, path + [element]

        # Recurse into the new context configuration.
        for context_raw_data, value, new_path in self._ResolveContext(
            context, name, context_raw_data, path=path + [element]):
          yield context_raw_data, value, new_path