protected void comment(StringBuilder source, ShaderNode shaderNode, String comment) {        
        appendIndent(source);
        source.append("//");
        source.append(shaderNode.getName());
        source.append(" : ");
        source.append(comment);
        source.append("\n");
    }
Appends a comment to the generated code
@param source the StringBuilder to use 
@param shaderNode the shader node being processed (to append its name)
@param comment the comment to append
jme3-core/src/main/java/com/jme3/shader/Glsl100ShaderGenerator.java