jetbrick-commons/src/main/java/jetbrick/io/buffer/FastBuffer.java
public FastBuffer<E> append(E element) {
        if ((currentBuffer == null) || (offset == currentBuffer.length)) {
            needNewBuffer(size + 1);
        }

        currentBuffer[offset] = element;
        offset++;
        size++;

        return this;
    }
public FastBuffer<E> append(E element) {
        if ((currentBuffer == null) || (offset == currentBuffer.length)) {
            needNewBuffer(size + 1);
        }

        currentBuffer[offset] = element;
        offset++;
        size++;

        return this;
    }
Appends single <code>E</code> to buffer.