src/vs/editor/common/config/editorOptions.ts/EditorComments/validate
class EditorComments:	public validate(_input: any): EditorCommentsOptions {
		if (!_input || typeof _input !== 'object') {
			return this.defaultValue;
		}
		const input = _input as IEditorCommentsOptions;
		return {
			insertSpace: boolean(input.insertSpace, this.defaultValue.insertSpace),
			ignoreEmptyLines: boolean(input.ignoreEmptyLines, this.defaultValue.ignoreEmptyLines),
		};
	}