Inconsistent return-types in CommandHeader.java

[OOPMan]

Hi, the return-types in java/bindings/src/main/java/com/automatak/dnp3/CommandHeader.java seem a bit inconsistent.

The following return class CommandHeader:

• fromSingleCROB
• fromSingleAO16
• fromCROB
• fromAO16

The following return interface CommandHeaders:

• fromSingleAO32
• fromSingleAOFloat32
• fromSingleAODouble64
• fromAO32
• fromAOFloat32
• fromAODouble64

This issue also applies to the

[jadamcrain]

It should just return the interface type CommandHeaders, not the impl type CommandHeader.

I think we can safely fix this in the next patch release as the impl type doesn't expose any additional methods.