dotnet/src/webdriver/ISearchContext.cs

// <copyright file="ISearchContext.cs" company="Selenium Committers">
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//
//   http://www.apache.org/licenses/LICENSE-2.0
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using System;
using System.Collections.ObjectModel;

namespace OpenQA.Selenium;

/// <summary>
/// Defines the interface used to search for elements.
/// </summary>
public interface ISearchContext
{
    /// <summary>
    /// Finds the first <see cref="IWebElement"/> using the given method.
    /// </summary>
    /// <param name="by">The locating mechanism to use.</param>
    /// <returns>The first matching <see cref="IWebElement"/> on the current context.</returns>
    /// <exception cref="ArgumentNullException">If <paramref name="by" /> is <see langword="null"/>.</exception>
    /// <exception cref="NoSuchElementException">If no element matches the criteria.</exception>
    IWebElement FindElement(By by);

    /// <summary>
    /// Finds all <see cref="IWebElement">IWebElements</see> within the current context
    /// using the given mechanism.
    /// </summary>
    /// <param name="by">The locating mechanism to use.</param>
    /// <returns>A <see cref="ReadOnlyCollection{T}"/> of all <see cref="IWebElement">WebElements</see>
    /// matching the current criteria, or an empty list if nothing matches.</returns>
    ReadOnlyCollection<IWebElement> FindElements(By by);
}