Added missing extensions to contact and license

Not sure how I missed these, however, better late than never.

datamodel/high/base/contact.go

@@ -4,8 +4,9 @@
 package base
 
 import (
-	low2 "github.com/pb33f/libopenapi/datamodel/high"
+	"github.com/pb33f/libopenapi/datamodel/high"
 	low "github.com/pb33f/libopenapi/datamodel/low/base"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"gopkg.in/yaml.v3"
 )
 
@@ -17,6 +18,7 @@ type Contact struct {
 	Name       string                              `json:"name,omitempty" yaml:"name,omitempty"`
 	URL        string                              `json:"url,omitempty" yaml:"url,omitempty"`
 	Email      string                              `json:"email,omitempty" yaml:"email,omitempty"`
+	Extensions *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low        *low.Contact                        `json:"-" yaml:"-"` // low-level representation
 }
 
@@ -27,6 +29,7 @@ func NewContact(contact *low.Contact) *Contact {
 	c.URL = contact.URL.Value
 	c.Name = contact.Name.Value
 	c.Email = contact.Email.Value
+	c.Extensions = high.ExtractExtensions(contact.Extensions)
 	return c
 }
 
@@ -45,6 +48,6 @@ func (c *Contact) Render() ([]byte, error) {
 }
 
 func (c *Contact) MarshalYAML() (interface{}, error) {
-	nb := low2.NewNodeBuilder(c, c.low)
+	nb := high.NewNodeBuilder(c, c.low)
 	return nb.Render(), nil
 }

datamodel/high/base/license.go

@@ -4,8 +4,9 @@
 package base
 
 import (
-	low2 "github.com/pb33f/libopenapi/datamodel/high"
+	"github.com/pb33f/libopenapi/datamodel/high"
 	low "github.com/pb33f/libopenapi/datamodel/low/base"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"gopkg.in/yaml.v3"
 )
 
@@ -17,6 +18,7 @@ type License struct {
 	Name       string                              `json:"name,omitempty" yaml:"name,omitempty"`
 	URL        string                              `json:"url,omitempty" yaml:"url,omitempty"`
 	Identifier string                              `json:"identifier,omitempty" yaml:"identifier,omitempty"`
+	Extensions *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low        *low.License
 }
 
@@ -24,6 +26,7 @@ type License struct {
 func NewLicense(license *low.License) *License {
 	l := new(License)
 	l.low = license
+	l.Extensions = high.ExtractExtensions(license.Extensions)
 	if !license.URL.IsEmpty() {
 		l.URL = license.URL.Value
 	}
@@ -53,6 +56,6 @@ func (l *License) Render() ([]byte, error) {
 
 // MarshalYAML will create a ready to render YAML representation of the License object.
 func (l *License) MarshalYAML() (interface{}, error) {
-	nb := low2.NewNodeBuilder(l, l.low)
+	nb := high.NewNodeBuilder(l, l.low)
 	return nb.Render(), nil
 }

datamodel/low/base/contact.go

@@ -8,6 +8,7 @@ import (
 	"crypto/sha256"
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"gopkg.in/yaml.v3"
 	"strings"
 )
@@ -20,6 +21,7 @@ type Contact struct {
 	Name       low.NodeReference[string]
 	URL        low.NodeReference[string]
 	Email      low.NodeReference[string]
+	Extensions *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 	KeyNode    *yaml.Node
 	RootNode   *yaml.Node
 	*low.Reference
@@ -31,6 +33,7 @@ func (c *Contact) Build(ctx context.Context, keyNode, root *yaml.Node, _ *index.
 	c.RootNode = root
 	c.Reference = new(low.Reference)
 	c.Nodes = low.ExtractNodes(ctx, root)
+	c.Extensions = low.ExtractExtensions(root)
 	return nil
 }
 
@@ -58,3 +61,8 @@ func (c *Contact) Hash() [32]byte {
 	}
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }
+
+// GetExtensions returns all extensions for Contact
+func (c *Contact) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
+	return c.Extensions
+}