i've made custom cluster of solana.
I'm trying to connect to it with web3.js like this:
const url = solanaWeb3.clusterApiUrl('http://x.x.x.x:8899/', false);
const solanaConnection = new solanaWeb3.Connection(url, 'confirmed');
but i'm getting this error:
Error: Unknown http cluster: http://x.x.x.x:8899/
Looking at the clusterApiUrl this only accepts :
export type Cluster = 'devnet' | 'testnet' | 'mainnet-beta';
is it possibile to change it?