default ExpressionMatcher<PatternValue> fldSz(ExpressionMatcher<?> size) {
			return new FieldSizeMatcher(size);
		}
Match a field by its size

<p>
This matches either a {@link TokenField} or a {@link ContextField}. If matched, it then
passes a {@link ConstantValue} of the field's size (in bits) into the given size matcher.

@param size the matcher for the field's size
@return the field matcher
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/assembler/sleigh/expr/match/ExpressionMatcher.java