initial commit lets start

models/contentHeader.go

@@ -0,0 +1,30 @@
+package models
+
+import (
+	"encoding/xml"
+	"time"
+)
+
+type ContentHeader struct {
+	XMLName              xml.Name       `xml:"contentHeader"`
+	Name                 string         `xml:"name,attr"`
+	ModificationDateTime string         `xml:"modificationDateTime,attr"`
+	CoordinateInfo       CoordinateInfo `xml:"coordinateInfo"`
+	AddData              *AddData       `xml:"addData"`
+}
+
+func (c *ContentHeader) SetCurrentCreationDateTime() {
+	//format "2026-08-25T21:35:38.4736792"
+	c.ModificationDateTime = time.Now().Format("2006-01-02T15:04:05.0000000")
+}
+
+func (c *ContentHeader) SetCoordinateDefault() {
+	c.CoordinateInfo.Default()
+}
+
+func (c *ContentHeader) AddAddData() *AddData {
+	if c.AddData == nil {
+		c.AddData = NewAddData()
+	}
+	return c.AddData
+}