sax :: Attributes :: local_name
# Look up an attribute's local name by index.
#
# Parameters:
#
# * `index`: attribute index.
#
# Returns:
#
# The local name, or the empty string if Namespace
# processing is not being performed, or `null`
# if the index is out of range.
#
# SEE: `length`
fun local_name(index: Int): nullable String is abstract
lib/sax/attributes.nit:68,2--81,56