build method
Build the NostrFilter.
Implementation
NostrFilter build() {
return NostrFilter(
kinds: _kinds.isEmpty ? null : _kinds.toList(),
authors: _authors.isEmpty ? null : _authors.toList(),
e: _e.isEmpty ? null : _e.toList(),
p: _p.isEmpty ? null : _p.toList(),
since: _since,
until: _until,
limit: _limit,
);
}