Function psyoptions::instruction::close_position

pub fn close_position(
    program_id: &Pubkey, 
    options_market: &Pubkey, 
    underlying_asset_pool: &Pubkey, 
    option_mint_key: &Pubkey, 
    option_token_source: &Pubkey, 
    option_token_source_authority: &Pubkey, 
    writer_token_mint: &Pubkey, 
    writer_token_source: &Pubkey, 
    writer_token_source_authority: &Pubkey, 
    underlying_asset_dest: &Pubkey, 
    size: u64
) -> Result<Instruction, ProgramError>

Creates a ClosePosition instruction