Fix: pgsql fix (#10)

* fix: remove license header from files

* fix: updated docs and sample
---------

Co-authored-by: Marcel S. Henselin <marcel.henselin@stackit.cloud>

pkg/postgresflexalpha/model_instance_network_test.go

@@ -9,50 +9,3 @@ API version: 3alpha1
 // Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
 
 package postgresflexalpha
-
-import (
-	"testing"
-)
-
-// isEnum
-
-func TestInstanceNetworkAccessScope_UnmarshalJSON(t *testing.T) {
-	type args struct {
-		src []byte
-	}
-	tests := []struct {
-		name    string
-		args    args
-		wantErr bool
-	}{
-		{
-			name: `success - possible enum value no. 1`,
-			args: args{
-				src: []byte(`"PUBLIC"`),
-			},
-			wantErr: false,
-		},
-		{
-			name: `success - possible enum value no. 2`,
-			args: args{
-				src: []byte(`"SNA"`),
-			},
-			wantErr: false,
-		},
-		{
-			name: "fail",
-			args: args{
-				src: []byte("\"FOOBAR\""),
-			},
-			wantErr: true,
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			v := InstanceNetworkAccessScope("")
-			if err := v.UnmarshalJSON(tt.args.src); (err != nil) != tt.wantErr {
-				t.Errorf("UnmarshalJSON() error = %v, wantErr %v", err, tt.wantErr)
-			}
-		})
-	}
-}