Major Description
When the parameter to dfdl:hexBInary is an xs:integer, it is supposed to create 1, 2, 4, or 8 bytes based on the value of the xs:integer. But if the value is greater than Short.MaxValue, it uses 8 bytes, regardless if it would fit in 4 bytes.
For example
dfdl:hexBinary(xs:integer(32768)))
returns 0000000000008000 but should return 00008000. It looks like the reduce function in XSHexBinary.scala does the right thing to reduce the value to an Integer, but then the wrong toHexBinary function is called in HexBinaryConversions.scala.