class RubyLsp::Document

def find_index_by_position(start_pos, end_pos = nil)

: (Hash[Symbol, untyped] start_pos, ?Hash[Symbol, untyped]? end_pos) -> [Integer, Integer?] 
def find_index_by_position(start_pos, end_pos = nil)
  scanner = create_scanner
  start_index = scanner.find_char_position(start_pos)
  end_index = scanner.find_char_position(end_pos) if end_pos
  [start_index, end_index]
end