src/vs/editor/common/viewModel.ts/SingleLineInlineDecoration/toInlineDecoration
class SingleLineInlineDecoration:	toInlineDecoration(lineNumber: number): InlineDecoration {
		return new InlineDecoration(
			new Range(lineNumber, this.startOffset + 1, lineNumber, this.endOffset + 1),
			this.inlineClassName,
			this.inlineClassNameAffectsLetterSpacing ? InlineDecorationType.RegularAffectingLetterSpacing : InlineDecorationType.Regular
		);
	}