void (byte @NotNull [] b, int off, int len) { if (off < 0 || off > b.length || len < 0 || off + len > b.length || off + len < 0) { throw new IndexOutOfBoundsException(); } if (len == 0) { return; } int newCount = myCount + len; if (newCount > myBuffer.length || myIsShared) { grow(newCount); myIsShared = false; } System.arraycopy(b, off, myBuffer, myCount, len); myCount = newCount; }