Get rid of checks when creating constructs. Check should handle this.

person.go

@@ -1,7 +1,6 @@
 package atom
 
 import (
-	"errors"
 	"fmt"
 	"net/mail"
 )
@@ -14,38 +13,19 @@ type Person struct {
 	Extensions []*ExtensionElement `xml:",any,omitempty"`
 }
 
-// NewPerson creates a new Person. It returns a *Person and an error.
-func NewPerson(name string) (*Person, error) {
-	if name == "" {
-		return nil, errors.New("error creating new person: name string empty")
-	}
-
-	return &Person{Name: name}, nil
+// NewPerson creates a new Person. It returns a *Person.
+func NewPerson(name string) *Person {
+	return &Person{Name: name}
 }
 
-// SetURI sets the URI element of the Person. It returns an error.
-func (l *Link) SetURI(uri string) error {
-	if !isValidIRI(uri) {
-		return fmt.Errorf("uri %v not correctly formatted", uri)
-	}
-
-	return nil
-}
-
-// AddExtension adds the Extension to the Person. It returns an error.
-func (p *Person) AddExtension(e *ExtensionElement) error {
-	if e == nil {
-		return errors.New("error adding extension element to person: *ExtensionElement is nil")
-	}
-
+// AddExtension adds the Extension to the Person.
+func (p *Person) AddExtension(e *ExtensionElement) {
 	if p.Extensions == nil {
 		p.Extensions = make([]*ExtensionElement, 1)
 		p.Extensions[0] = e
 	} else {
 		p.Extensions = append(p.Extensions, e)
 	}
-
-	return nil
 }
 
 // Check checks the Person for incompatibilities with RFC4287. It returns an