readFileSync({ dir, name }) {
    const filePath = this.getFilePath({ dir, name, prefix: false });
    return fs.readFileSync(filePath);
  }
The FS.readFileSync method is an inbuilt application programming interface
of fs module which is used to read the file and return its content.
@param {object} conf - processing configuration
@param {string} conf.dir - File directory
@param {string} conf.name - File directory
@return {buffer} This method returns the content of the file.
@public