_emitWarning(state, message, locConverter, start, end) {
		const { line: sl, column: sc } = locConverter.get(start);
		const { line: el, column: ec } = locConverter.get(end);

		state.current.addWarning(
			new ModuleDependencyWarning(state.module, new WebpackError(message), {
				start: { line: sl, column: sc },
				end: { line: el, column: ec }
			})
		);
	}
@param {ParserState} state parser state
@param {string} message warning message
@param {LocConverter} locConverter location converter
@param {number} start start offset
@param {number} end end offset