getSource(sourceString, compilation) {
		if (this.useSourceMap || this.useSimpleSourceMap) {
			return new OriginalSource(
				sourceString,
				`webpack://${makePathsRelative(
					(compilation && compilation.compiler.context) || "",
					this.identifier(),
					compilation && compilation.compiler.root
				)}`
			);
		}
		return new RawSource(sourceString);
	}
@param {string} sourceString source content
@param {Compilation=} compilation the compilation
@returns {Source} generated source