add comments in compiler

Signed-off-by: Future-Outlier <[email protected]>

flytepropeller/pkg/compiler/validators/bindings.go

@@ -147,7 +147,7 @@ func validateBinding(w c.WorkflowBuilder, node c.Node, nodeParam string, binding
 					} else if sourceType.GetMapValueType() != nil {
 						sourceType = sourceType.GetMapValueType()
 					} else if sourceType.GetStructure() != nil && sourceType.GetStructure().GetDataclassType() != nil {
-
+						// This is for retrieving the literal type of an attribute in a dataclass or Pydantic BaseModel
 						tmpType, exist = sourceType.GetStructure().GetDataclassType()[attr.GetStringValue()]
 
 						if !exist {