```ts
// Button.stories.ts

import { Meta, Story } from '@storybook/angular';

import { Button } from './button.component';

export default {
  /* 👇 The title prop is optional.
  * See https://storybook.js.org/docs/angular/configure/overview#configure-story-loading
  * to learn how to generate automatic titles
  */
  title: 'Button',
  component: Button,
  //👇 Creates specific argTypes
  argTypes: {
    backgroundColor: { control: 'color' },
  },
} as Meta;

//👇 Some function to demonstrate the behavior
const someFunction = (someValue: string) => {
  return `i am a ${someValue}`;
};


export const ExampleStory: Story = (args) => {
  //👇 Destructure the label from the args object
  const { label } = args;
  
  //👇 Assigns the function result to a variable and pass it as a prop into the component
  const functionResult = someFunction(label);
  return {
    props: {
      ...args,
      label: functionResult,
    },
  };
};
ExampleStory.args = {
  primary: true,
  size: 'small',
  label: 'button',
};
```