parameters: (self)
docstring: Returns the start_pos of the prefix. This means basically it returns
          the end_pos of the last prefix. The `get_start_pos_of_prefix()` of the
          prefix `+` in `2 + 1` would be `(1, 1)`, while the start_pos is
          `(1, 2)`.
  
          :return tuple of int: (line, column)
docstring_summary: Returns the start_pos of the prefix. This means basically it returns
          the end_pos of the last prefix. The `get_start_pos_of_prefix()` of the
          prefix `+` in `2 + 1` would be `(1, 1)`, while the start_pos is
          `(1, 2)`.
docstring_tokens: Returns the start_pos of the prefix . This means basically it returns the end_pos of the last prefix . The get_start_pos_of_prefix () of the prefix + in 2 + 1 would be ( 1 1 ) while the start_pos is ( 1 2 ) .
function: def get_start_pos_of_prefix(self):
          """
          Returns the start_pos of the prefix. This means basically it returns
          the end_pos of the last prefix. The `get_start_pos_of_prefix()` of the
          prefix `+` in `2 + 1` would be `(1, 1)`, while the start_pos is
          `(1, 2)`.
  
          :return tuple of int: (line, column)
          """
function_tokens: def get_start_pos_of_prefix ( self ) :