Refactored version directory names

3.0 and 2.0 do not work, there are multiple versions and anything with a period in it sucks from my point of view, v2 and v3 feel much better from a DX perspective.

datamodel/low/v2/examples.go

@@ -0,0 +1,71 @@
+// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
+// SPDX-License-Identifier: MIT
+
+package v2
+
+import (
+	"github.com/pb33f/libopenapi/datamodel/low"
+	"github.com/pb33f/libopenapi/index"
+	"gopkg.in/yaml.v3"
+)
+
+const (
+	ExamplesLabel = "examples"
+)
+
+type Examples struct {
+	Values map[low.KeyReference[string]]low.ValueReference[any]
+}
+
+func (e *Examples) FindExample(name string) *low.ValueReference[any] {
+	return low.FindItemInMap[any](name, e.Values)
+}
+
+func (e *Examples) Build(root *yaml.Node, _ *index.SpecIndex) error {
+	var keyNode, currNode *yaml.Node
+	var err error
+	e.Values = make(map[low.KeyReference[string]]low.ValueReference[any])
+	for i := range root.Content {
+		if i%2 == 0 {
+			keyNode = root.Content[i]
+			continue
+		}
+		currNode = root.Content[i]
+		var n map[string]interface{}
+		err = currNode.Decode(&n)
+		if err != nil {
+			var k []interface{}
+			err = currNode.Decode(&k)
+			if err != nil {
+				// lets just default to interface
+				var j interface{}
+				_ = currNode.Decode(&j)
+				e.Values[low.KeyReference[string]{
+					Value:   keyNode.Value,
+					KeyNode: keyNode,
+				}] = low.ValueReference[any]{
+					Value:     j,
+					ValueNode: currNode,
+				}
+				continue
+			}
+			e.Values[low.KeyReference[string]{
+				Value:   keyNode.Value,
+				KeyNode: keyNode,
+			}] = low.ValueReference[any]{
+				Value:     k,
+				ValueNode: currNode,
+			}
+			continue
+		}
+		e.Values[low.KeyReference[string]{
+			Value:   keyNode.Value,
+			KeyNode: keyNode,
+		}] = low.ValueReference[any]{
+			Value:     n,
+			ValueNode: currNode,
+		}
+
+	}
+	return nil
+}