android/guava/src/com/google/common/collect/CompactHashSet.java
void insertEntry(int entryIndex, E object, int hash) {
    this.entries[entryIndex] = ((long) hash << 32) | (NEXT_MASK & UNSET);
    this.elements[entryIndex] = object;
  }
void insertEntry(int entryIndex, E object, int hash) {
    this.entries[entryIndex] = ((long) hash << 32) | (NEXT_MASK & UNSET);
    this.elements[entryIndex] = object;
  }
Creates a fresh entry with the specified object at the specified position in the entry arrays.