Must return a table with rows (array of records)
every row must contain the keys element and attribute
"element" is the tag name to search for
"attribute" is the attribute name that contains the url
Returns Record<string, string>[]
ProtectedAbstractsearchNamespace
searchNamespace(): string
Must return a string with the namespace to search for
This method checks if the recently downloaded file from source located at path is a valid resource, if not will remove the file and throw an exception