@Override
	public String toString() {
		//@formatter:off
		return "{\n" +
			"\tcolumn: " + columnIndex +",\n" +
			"\toperation: " + logicOperation + ",\n" +
			"\tconstraints: " + CollectionUtils.collect(constraints, c -> c.asString())  +"\n" +
		"}";
		//@formatter:on
	}
Returns true if this is a String constraint or a type converting constraint where the type
is converted to a string constraint. (i.e. uses a String editor)
@param constraint the constraint to check.
@return true if this is a String constraint or something that is converted to a string constraint.
Ghidra/Framework/Docking/src/main/java/docking/widgets/table/columnfilter/ColumnConstraintSet.java