- Renamed functions to have more descriptive names.

- Ensured that function names follow go-lint naming conventions.
- Corrected and spelling mistakes in the codebase.

binding/binding_test.go

@@ -50,7 +50,7 @@ type FooBarFileStruct struct {
 type FooBarFileFailStruct struct {
 	FooBarStruct
 	File *multipart.FileHeader `invalid_name:"file" binding:"required"`
-	// for unexport test
+	// for unexported test
 	data *multipart.FileHeader `form:"data" binding:"required"`
 }