StablePay

        });         // Transfer full amount from customer to payment processor        let transfer_to_processor_ctx = CpiContext::new(            ctx.accounts.token_program.to_account_info(),            Transfer {                from: ctx.accounts.customer_token_account.to_account_info(),                to: ctx.accounts.payment_processor_token_account.to_account_info(),                authority: ctx.accounts.customer.to_account_info(),            },        );                token::transfer(transfer_to_processor_ctx, amount)?;         // Transfer fee to fee recipient        let seeds = &[            b"payment_processor".as_ref(),            &[payment_processor.bump],        ];        let signer = &[&seeds[..]];        let fee_transfer_ctx = CpiContext::new_with_signer(            ctx.accounts.token_program.to_account_info(),            Transfer {                from: ctx.accounts.payment_processor_token_account.to_account_info(),

1. Line 88 let transfer_to_processor_ctx = CpiContext::new(: Makes a cross-program invocation into another program.
2. Line 97 token::transfer(transfer_to_processor_ctx, amount)?;: An SPL token transfer through the Token Program.
3. Line 100 let seeds = &[: Declares the PDA seeds. Anchor re-derives the address and rejects the account if it doesn't match.
4. Line 102 &[payment_processor.bump],: Uses the bump seed, the extra byte that pushes the derived address off the ed25519 curve.
5. Line 105 let fee_transfer_ctx = CpiContext::new_with_signer(: Makes a CPI signed by a PDA. The signer seeds prove the program controls that address.

import {   Connection,   Keypair,   PublicKey,   Transaction,  SystemProgram,   TransactionInstruction,  sendAndConfirmTransaction,  TransactionSignature} from '@solana/web3.js';import {   TOKEN_PROGRAM_ID,   createTransferInstruction,  getAssociatedTokenAddress,  createAssociatedTokenAccountInstruction} from '@solana/spl-token';import * as anchor from '@project-serum/anchor';import * as fs from 'fs';import * as path from 'path';import { Buffer } from 'buffer';import config from '../config';import logger from '../utils/logger'; /**

1. Line 8 sendAndConfirmTransaction,: Submits the signed transaction to the cluster.
2. Line 13 createTransferInstruction,: An SPL token transfer through the Token Program.