Set the value of the field(s) to a new value.
Set the value of the field(s) to a new value.
A copy of the root object with the (deeply nested) field(s) set to the new value.
Transform the value of the field(s) using the given function.
Transform the value of the field(s) using the given function.
A copy of the root object with the (deeply nested) field(s) modified.