diff --git a/propertycollector.go b/propertycollector.go
index fffd29b..b5dbda0 100644
--- a/propertycollector.go
+++ b/propertycollector.go
@@ -50,10 +50,11 @@ type SelectionSpec struct {
 // http://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.wssdk.apiref.doc/vmodl.query.PropertyCollector.TraversalSpec.html
 type TraversalSpec struct {
 	SelectionSpec
-	XsiType string `xml:"http://www.w3.org/2001/XMLSchema-instance type,attr"`
-	Type    string `xml:"type"`
-	Path    string `xml:"path"`
-	Skip    bool   `xml:"skip"`
+	XsiType   string           `xml:"http://www.w3.org/2001/XMLSchema-instance type,attr"`
+	Type      string           `xml:"type"`
+	Path      string           `xml:"path"`
+	Skip      bool             `xml:"skip"`
+	SelectSet []*SelectionSpec `xml:"selectSet"`
 }
 
 // http://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.wssdk.apiref.doc/vmodl.query.PropertyCollector.PropertySpec.html
@@ -93,3 +94,24 @@ type MissingProperty struct {
 	// Fault LocalizedMethodFault `xml:"fault"` // TODO(igm)
 	Path string `xml:"path"`
 }
+
+// http://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.wssdk.apiref.doc%2Fvmodl.query.PropertyCollector.html
+type CreatePropertyCollector struct {
+	XMLName xml.Name           `xml:"urn:vim25 CreatePropertyCollector"`
+	This    *PropertyCollector `xml:"_this"`
+}
+
+type CreatePropertyCollectorResponse struct {
+	XMLName           xml.Name           `xml:"urn:vim25 CreatePropertyCollectorResponse"`
+	PropertyCollector *PropertyCollector `xml:"returnval"`
+}
+
+// http://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.wssdk.apiref.doc%2Fvmodl.query.PropertyCollector.html
+type DestroyPropertyCollector struct {
+	XMLName xml.Name           `xml:"urn:vim25 DestroyPropertyCollector"`
+	This    *PropertyCollector `xml:"_this"`
+}
+
+type DestroyPropertyCollectorResponse struct {
+	XMLName xml.Name `xml:"urn:vim25 DestroyPropertyCollectorResponse"`
+}
diff --git a/sessionmanager.go b/sessionmanager.go
index 842cb5b..0911033 100644
--- a/sessionmanager.go
+++ b/sessionmanager.go
@@ -16,6 +16,14 @@ type LoginResponse struct {
 	UserSession UserSession `xml:"urn:vim25 returnval"`
 }
 
+type Logout struct {
+	XMLName xml.Name        `xml:"urn:vim25 Logout"`
+	This    *SessionManager `xml:"_this"`
+}
+
+type LogoutResponse struct {
+}
+
 type UserSession struct {
 	Key            string    `xml:"key"`
 	UserName       string    `xml:"userName"`
diff --git a/soap.go b/soap.go
index 99dc9cf..766058b 100644
--- a/soap.go
+++ b/soap.go
@@ -47,8 +47,10 @@ type Body struct {
 	CurrentTimeResponse            *CurrentTimeResponse
 
 	// SessionManager
-	LoginRequest  *Login
-	LoginResponse *LoginResponse
+	LoginRequest   *Login
+	LoginResponse  *LoginResponse
+	LogoutRequest  *Logout
+	LogoutResponse *LogoutResponse
 
 	// ViewManager
 	CreateContainerViewRequest  *CreateContainerView
@@ -60,6 +62,10 @@ type Body struct {
 	ContinueRetrievePropertiesExRequest  *ContinueRetrievePropertiesEx
 	ContinueRetrievePropertiesExResponse *ContinueRetrievePropertiesExResponse
 	CancelRetrievePropertiesExRequest    *CancelRetrievePropertiesEx
+	CreatePropertyCollectorRequest       *CreatePropertyCollector
+	CreatePropertyCollectorResponse      *CreatePropertyCollectorResponse
+	DestroyPropertyCollectorRequest      *DestroyPropertyCollector
+	DestroyPropertyCollectorResponse     *DestroyPropertyCollectorResponse
 
 	// VirtualMachine
 	PowerOnVM_Task          *PowerOnVM_Task