core.call

const redeemResult = builder.core.call('redeem', {
  resource: builder.inputs.shares,
  bind: {
    shares: builder.inputs.shares,
    receiver: builder.context.executionAddress,
    owner: builder.context.executionAddress,
  },
  config: {
    target: VAULT,
    functionSignature:
      'function redeem(uint256 shares, address receiver, address owner) returns (uint256)',
    approvals: [{ spender: VAULT }],
  },
});

// Graduate the uint256 return value into a tracked resource.
builder.core.asResource('underlying', {
  bind: { handle: redeemResult.result },
  config: { resource: resources.erc20(USDC, 1) },
});