以下是根据Google Style生成的完整文档，符合函数描述、参数详情、返回值、以及示例代码的要求：

/**
 * Multiplies two numbers and returns the result.
 *
 * This function takes in two numeric arguments, `a` and `b`, 
 * and returns the product of these two values. It is designed 
 * to perform simple multiplication operations.
 *
 * @param {number} a The first number to multiply.
 * @param {number} b The second number to multiply.
 * @return {number} The product of the two numbers.
 *
 * @example
 * // Simple multiplication of two integers
 * const result1 = multiply(3, 4);
 * console.log(result1); // Output: 12
 *
 * // Multiplication involving a decimal
 * const result2 = multiply(2.5, 4);
 * console.log(result2); // Output: 10
 *
 * // Multiplication with negative numbers
 * const result3 = multiply(-2, 3);
 * console.log(result3); // Output: -6
 */
function multiply(a, b) {
  return a * b;
}

此文档注释块详尽地描述了函数的用途和行为，包括参数说明（@param）、返回值（@return），并提供了若干常见使用情景的示例代码（@example），完全符合Google Style文档注释的标准。

Java Method Documentation

Function: subtract

Description

The subtract method takes two integers as input and returns their difference. It performs a simple arithmetic operation by subtracting the second parameter from the first.

Parameters

| Name | Type | Description | |------|--------|--------------------------------------------------| | a | int | The minuend. The number from which another is subtracted. | | b | int | The subtrahend. The number to be subtracted. |

Return Value

• Type: int
• Description: Returns the difference between the two parameters a and b.

Example Usage

public class MathOperations {
    public static void main(String[] args) {
        MathOperations operations = new MathOperations();

        // Example usage of the subtract method
        int result = operations.subtract(10, 4);

        // Print the result
        System.out.println("The result of subtraction: " + result); // Output: 6
    }

    /**
     * Subtract two integers and return the result.
     * @param a The minuend
     * @param b The subtrahend
     * @return The result of a - b
     */
    public int subtract(int a, int b) {
        return a - b;
    }
}

Explanation of Example

In the example above:

• Method subtract is called with arguments 10 and 4.
• It calculates 10 - 4, which equals 6.
• The result is then output to the console: The result of subtraction: 6.

This documentation adheres to Markdown standards and provides all the necessary details for understanding and using the subtract method effectively.