Improve comments for wrapper modifier

pkg/codec/config.go

@@ -252,34 +252,58 @@ func (c *AddressBytesToStringModifierConfig) MarshalJSON() ([]byte, error) {
 	})
 }
 
-// WrapperModifierConfig wraps each field specified in cfg into a struct. These new structs contain the wrapped field as a subfield with a configurable name.
+// WrapperModifierConfig replaces each field based on cfg map keys with a struct containing one field with the value of the original field which has is named based on map values.
 // Wrapper modifier does not maintain the original pointers.
 // Wrapper modifier config shouldn't edit fields that affect each other since the results are not deterministic.
 //
-//		For e.g.
+//		Example #1:
+//
+//		Based on this input struct:
+//			type example struct {
+//				A string
+//			}
+//
+//		And the wrapper config defined as:
+//	 		{"D": "W"}
+//
+//		Result:
 //			type example struct {
-//				A string;
-//				B struct {A, B, C};
-//				C array  [{A, B, C}, {A, B, C}, {A, B, C}...];
-//				D string;
+//				D
 //			}
 //
-//	 	With transformations defined as:
-//	 	{"B.A": "X", "B.C": "Z", "C.A": "Y", "D": "W"}
+//			where D is a struct that contains the original value of D under the name W:
+//				type D struct {
+//					W string
+//				}
 //
-//	 	Steps (in non deterministic order), where letters are field names:
-//	   	1. "B.A": "X" -> B: { A: {X}; B; C; }
-//	   	2. "B.C": "Z" -> B: { A: {X}; B; C: {Z}; }
-//	   	3. "C.A": "Y" -> C: [{ A: {Y}; B; C; }, { A: {Y}; B; C; }, ...]
-//	   	4. "D":	  "W"   -> D: {W}
 //
-//	 	Result:
-//	   	{
-//	     	A string;
-//	     	B struct { A struct {X}; B; C struct {Z}; };
-//	     	C array  [{ A struct {Y}; B; C; }, { A struct {Y}; B; C; }, ...];
-//	     	D struct {W};
-//	   	}
+//		Example #2:
+//		Wrapper modifier works on any type of field, including nested fields or nested fields in slices etc.!
+//
+//		Based on this input struct:
+//			type example struct {
+//				A []B
+//			}
+//
+//			type B struct {
+//				C string
+//				D string
+//			}
+//
+//		And the wrapper config defined as:
+//	 		{"A.C": "E", "A.D": "F"}
+//
+//		Result:
+//			type example struct {
+//				A []B
+//			}
+//
+//			type B struct {
+//				C type struct { E string }
+//				D type struct { F string }
+//			}
+//
+//			Where each element of slice A under fields C.E and D.F retains the values of their respective input slice elements A.C and A.D .
 type WrapperModifierConfig struct {
 	// Fields key defines the fields to be wrapped and the name of the wrapper struct.
 	// The field becomes a subfield of the wrapper struct where the name of the subfield is map value.