ERROR: unrecognized parameter "maxelements"

[mineshaftgap]

Steps to reproduce

1. CREATE EXTENSION IF NOT EXISTS embedding;
2. CREATE TABLE test_data(id integer PRIMARY KEY, embedding real[]);
3. CREATE INDEX ON test_data USING hnsw (embedding) WITH (maxelements = 1000000, dims=1536, m=32);

Expected result

CREATE INDEX
Index created

Actual result

ERROR: unrecognized parameter "maxelements"

Environment

Ubuntu 22.04
Postgres 16

Logs, links

• https://neon.tech/blog/pg-embedding-extension-for-vector-search
• https://github.com/search?q=repo%3Aneondatabase%2Fpg_embedding%20maxelements&type=code