matchOffsetOf(baseToken, offsetToken) {
		/*
		 * lockedFirstTokens is a map from a token whose indentation is controlled by the "first" option to
		 * the token that it depends on. For example, with the `ArrayExpression: first` option, the first
		 * token of each element in the array after the first will be mapped to the first token of the first
		 * element. The desired indentation of each of these tokens is computed based on the desired indentation
		 * of the "first" element, rather than through the normal offset mechanism.
		 */
		this._lockedFirstTokens.set(offsetToken, baseToken);
	}
Sets the offset column of token B to match the offset column of token A.
- **WARNING**: This matches a *column*, even if baseToken is not the first token on its line. In
most cases, `setDesiredOffset` should be used instead.
@param {Token} baseToken The first token
@param {Token} offsetToken The second token, whose offset should be matched to the first token
@returns {void}