public Builder catcher(Catcher.Builder catcherBuilder) {
            this.catchers.add(catcherBuilder);
            return this;
        }
OPTIONAL. Adds the {@link Catcher} to this states catchers.  If a single branch fails then the entire map state
is
considered failed and eligible to be caught.

@param catcherBuilder Instance of {@link Catcher.Builder}. Note
                      that the {@link
                      Catcher} object is not built until the {@link MapState} is built so any modifications on
                      the
                      state builder will be reflected in this object.
@return This object for method chaining.
aws-java-sdk-stepfunctions/src/main/java/com/amazonaws/services/stepfunctions/builder/states/MapState.java