Javadoc for ContractParam methods missing

[hendrikebbers]

🆕🐥 First Timers Only

This issue is reserved for people who have never contributed to hedera-enterprise or any open source project in general.
We know that creating a pull request (PR) is a major barrier for new contributors.
The goal of this issue and all other issues labeled by 'good first issue' is to help you make your first contribution to Hedera.

👾 Description of the issue

When calling a smart contract function on the Hedera network, you can pass parameters to that function. The record ContractParam defines such a parameter. The record provides several static methods that can be called to create a parameter of a specific native type (like string, bool, or unit256). Only a few of those methods have a Javadoc today, and a Javadoc should be added to all methods.

Additional information

Why you do not need to know much about smart contracts to solve that issue you can find a good read about that topic here. A technical documentation of all possible parameter types for smart contracts can be found in the documentation of the smart contract language solidity.

📋 Step by step guide to do a contribution

If you have never contributed to an open source project at GitHub, the following step-by-step guide will introduce you to the workflow.
A more detailed general documentation of the GitHub PR workflow can be found here.

• Claim this issue: Comment below that you are interested in working on the issue
• Wait for assignment: A community member with the given rights will add you as an assignee of the issue
• Fork the repository: You can do that in GitHub (by simply clicking the 'fork' button).
• Check out the forked repository
• Create a feature branch for the issue. We do not have a hard naming definition for branches but it is best practice to prefix the branch name with the issue id.
• Solve the issue in your branch.
• Commit your changes: to your branch
• Start a Pull Request (PR): in the hedera-enterprise repository
• Check GitHub Actions: Several GitHub Actions will be triggered automatically for each PR. If a GitHub Action fails and you do not understand the cause of that error do not hesitate to add a comment to the PR and ask the community for support.
• Wait for reviews: Members of the community will review your PR. If a reviewer finds any missing pieces or a problem, he or she will start a discussion with you and describe the next steps for solving the problem.
• You did it 🎉: We will merge the fix in the develop branch. Thanks for being part of our community as an open-source contributor ❤️

🎉 Contribute to Hacktoberfest

Solve this issue as part of the Hacktoberfest event and get a chance to receive cool goodies like a T-Shirt. 🎽

🤔 Additional informantion

If you have any questions, just ask us directly in this issue by adding a comment. You can join the Hedera community chat at Discord. A general manual about open-source contributions can be found here.