SAP CAP - Calling function internally with headers

consume_function_locally.js

const oFuncResponse = await myService.myFunc1({
  param1 : 'value1',
  param2 : 'value2'
});

//If it is required to pass any custom headers, then use .send method with event paraeter as below:
const oFuncResponse = await myService.send({
  "event": 'myFunc1',
  "data": {
    param1 : 'value1',
    param2 : 'value2'
  },
  "headers": {
    'x-header-foo': 'bar'
  }
})