/guava/guava/src/com/google/common/collect/ImmutableMap.java
return this; this.size += other.size;System.arraycopy( other.entries, 0, this.entries, this.size, other.size) ;
System.arraycopy ( other.entries, 0, this.entries, this.size, other.size ) ; this.size += other.size; return this;
return this; } @CanIgnoreReturnValue Builder<K, V> combine(Builder<K, V> other) { checkNotNull(other); ensureCapacity(this.size + other.size); <extra_id_0> } private ImmutableMap<K, V> build(boolean throwIfDuplicateKeys) { switch (size) { case 0: return of(); case 1: