urbanairship-core/src/main/java/com/urbanairship/push/PendingTagGroupMutationStore.java
@Nullable
    TagGroupsMutation peek() {
        synchronized (this) {
            List<TagGroupsMutation> mutations = getMutations();
            if (mutations.isEmpty()) {
                return null;
            }
            return mutations.get(0);
        }
    }
/**
     * Peeks the top mutation.
     *
     * @return The top tag group mutation or {@code null} if no mutations exist.
     */
Peeks the top mutation.
@return The top tag group mutation or  null if no mutations exist.
Peeks the top mutation . @return The top tag group mutation or null if no mutations exist .
@Nullable
    TagGroupsMutation peek() {
        synchronized (this) {
            List<TagGroupsMutation> mutations = getMutations();
            if (mutations.isEmpty()) {
                return null;
            }
            return mutations.get(0);
        }
    }
@ Nullable TagGroupsMutation peek ( ) { synchronized ( this ) { List < TagGroupsMutation > mutations = getMutations ( ) ; if ( mutations . isEmpty ( ) ) { return null ; } return mutations . get ( 0 ) ; } }
Peeks the top mutation.
Peeks the top mutation .