I'm struggling with how to name this method, I don't like the "set" prefix, because I feel it should be reserved for normal "dumb" setters and some tools might not like it (i did not check it in checkstyle, pmd, etc., but I got a feeling they won't like it.)

for example (in java, but I feel its language agnostic)

public void setField1Field2(String field1, String field2) {
    this.field1 = field1;
    this.field2 = field2;        
}

The only purpose of this method is ONLY to set, this method is needed and cannot be joined with any other (because of framework used).