diff --git a/sdk/bp.go b/sdk/bp.go
index e2dace8..7ff85a1 100644
--- a/sdk/bp.go
+++ b/sdk/bp.go
@@ -298,15 +298,15 @@
 	return module
 }
 
-func (t identityTransformation) transformPropertySetBeforeContents(name string, propertySet *bpPropertySet, tag android.BpPropertyTag) (*bpPropertySet, android.BpPropertyTag) {
+func (t identityTransformation) transformPropertySetBeforeContents(_ string, propertySet *bpPropertySet, tag android.BpPropertyTag) (*bpPropertySet, android.BpPropertyTag) {
 	return propertySet, tag
 }
 
-func (t identityTransformation) transformPropertySetAfterContents(name string, propertySet *bpPropertySet, tag android.BpPropertyTag) (*bpPropertySet, android.BpPropertyTag) {
+func (t identityTransformation) transformPropertySetAfterContents(_ string, propertySet *bpPropertySet, tag android.BpPropertyTag) (*bpPropertySet, android.BpPropertyTag) {
 	return propertySet, tag
 }
 
-func (t identityTransformation) transformProperty(name string, value interface{}, tag android.BpPropertyTag) (interface{}, android.BpPropertyTag) {
+func (t identityTransformation) transformProperty(_ string, value interface{}, tag android.BpPropertyTag) (interface{}, android.BpPropertyTag) {
 	return value, tag
 }
 
@@ -332,7 +332,7 @@
 	return &moduleCopy
 }
 
-func (t deepCopyTransformation) transformPropertySetBeforeContents(name string, propertySet *bpPropertySet, tag android.BpPropertyTag) (*bpPropertySet, android.BpPropertyTag) {
+func (t deepCopyTransformation) transformPropertySetBeforeContents(_ string, propertySet *bpPropertySet, tag android.BpPropertyTag) (*bpPropertySet, android.BpPropertyTag) {
 	// Create a shallow copy of the properties map. Any mutable property values will be copied by the
 	// transformer.
 	propertiesCopy := make(map[string]interface{})
@@ -354,7 +354,7 @@
 	}, tag
 }
 
-func (t deepCopyTransformation) transformProperty(name string, value interface{}, tag android.BpPropertyTag) (interface{}, android.BpPropertyTag) {
+func (t deepCopyTransformation) transformProperty(_ string, value interface{}, tag android.BpPropertyTag) (interface{}, android.BpPropertyTag) {
 	// Copy string slice, otherwise return value.
 	if values, ok := value.([]string); ok {
 		valuesCopy := make([]string, len(values))
@@ -372,7 +372,7 @@
 	order   []*bpModule
 }
 
-// Add a module.
+// AddModule adds a module to this.
 //
 // The module must have had its "name" property set to a string value that
 // is unique within this file.