/**
* Balance of user in stream.
*
* @param streamID (string): ID of stream
* @param address (string): wallet address (if this is not provided, address of current account on metamask will be used)
*
* @return Promise<string: balance of stream>
*/
CalamusInstance.balanceOf("15", "0xB775fa6D48ec0e8394bbD6bE52956Bde7e036a36")
.then(result => console.log('Result: ', result)).catch(error => console.log('Error: ', error));
or use async await function
const result = await CalamusInstance.balanceOf("BNBT", "26", "10")
