public VarType getDefineIdType(int defineId) {
        return defineId < defineTypes.size() ? defineTypes.get(defineId) : null;
    }
Get the type of a particular define.

@param defineId The define ID to lookup.
@return The type of the define, or null if not found.
jme3-core/src/main/java/com/jme3/material/TechniqueDef.java