int add(java.lang.Object)
int add(java.lang.String, java.lang.String)
void clear()
boolean contains(java.lang.Object)
java.lang.Object get(int)
com.aspose.cells.WebExtensionProperty get(java.lang.String)
int getCount()
int indexOf(java.lang.Object)
java.util.Iterator iterator()
void removeAt(int)
void removeAt(java.lang.String)
com.aspose.cells.WebExtensionPropertyCollection