jodd-proxetta/src/main/java/jodd/asm7/ByteVector.java
public ByteVector putByte(final int byteValue) {
    int currentLength = length;
    if (currentLength + 1 > data.length) {
      enlarge(1);
    }
    data[currentLength++] = (byte) byteValue;
    length = currentLength;
    return this;
  }
public ByteVector putByte(final int byteValue) {
    int currentLength = length;
    if (currentLength + 1 > data.length) {
      enlarge(1);
    }
    data[currentLength++] = (byte) byteValue;
    length = currentLength;
    return this;
  }
Puts a byte into this byte vector. The byte vector is automatically enlarged if necessary.

@param byteValue a byte.
@return this byte vector.