code: @Nullable
  	private FieldAnnotation getFieldAnnotation(final String fieldName) {
  		JavaClass cls = getClassContext().getJavaClass();
  		Field[] fields = cls.getFields();
  		for (Field f : fields) {
  			if (f.getName().equals(fieldName)) {
  				return new FieldAnnotation(cls.getClassName(), fieldName, f.getSignature(), f.isStatic());
  			}
  		}
  		return null; // shouldn't happen
  	}
docs: builds a field annotation by finding the field in the classes' field list
  
  @param fieldName the field for which to built the field annotation
  
  @return the field annotation of the specified field