Add check for summary element of entry

inlineOtherContent.go

@@ -6,6 +6,10 @@ type InlineOtherContent struct {
 	AnyElement []*any    `xml:"anyelement,omitempty"`
 }
 
-func (i *InlineOtherContent) IsContent() bool { return true }
+func (i *InlineOtherContent) isContent() bool { return true }
+
+func (i *InlineOtherContent) hasSRC() bool { return false }
+
+func (i *InlineOtherContent) getType() string { return string(i.Type) }
 
 func (i *InlineOtherContent) Check() error { return nil }