protected void initVariable(StringBuilder source, ShaderNodeVariable var, String initValue) {
        appendIndent(source);
        source.append(var.getNameSpace());
        source.append("_");
        source.append(var.getName());
        source.append(" = ");
        source.append(initValue);
        source.append(";\n");
    }
Append a variable initialization to the code

@param source the StringBuilder to use
@param var the variable to initialize
@param initValue the init value to assign to the variable
jme3-core/src/main/java/com/jme3/shader/Glsl150ShaderGenerator.java