# Quick fix/assists: Add/Remove Signatures

Remove signatures from method binding
  Applicable on callout/callin method bindings with signatures:
  This change is applicable as a quick assist, and — if either method spec cannot be resolved — it can also be used as a quick fix.
  Should removing the signatures not fix the problem, subsequent invocation of the inverse, "Add signatures ...", may be tried.
Add signatures to method binding
  Applicable on callout/callin method bindings without signatures.
  If no compilation problem exists this change is offered as a quick assist, which can, e.g., be used in preparation for adding a quard predicate or a parameter mapping.
  It can be invoked as a quick fix if the base method spec is ambiguous due to overloading in the base class:
  .
  In this case the list of matching base methods will be presented for selection:
  ,