A LoggingStrategy defines how to wire a new logger instance into an existing class. It is meant to be used with the
| Type Params | Return Type | Name and description | 
|---|---|---|
|  | FieldNode | addLoggerFieldToClass(ClassNode classNode, String fieldName, String categoryName)In this method, you are given a ClassNode, a field name and a category name, and you must add a new Field onto the class. | 
|  | String | getCategoryName(ClassNode classNode, String categoryName) | 
|  | boolean | isLoggingMethod(String methodName) | 
|  | Expression | wrapLoggingMethodCall(Expression logVariable, String methodName, Expression originalExpression) | 
In this method, you are given a ClassNode, a field name and a category name, and you must add a new Field onto the class. Return the result of the ClassNode.addField operations.
classNode -     the class that was originally annotated with the Log transformation.fieldName -     the name of the logger fieldcategoryName -  the name of the logging category