This PR introduces a new utility class, SpringContextAccessor, which provides static access to the Spring application context. This allows for the retrieval of beans, such as tenant properties, in a static manner. Additionally, a factory method has been added to OkapiRestTemplate to facilitate its creation and configuration using a builder pattern.

Key Changes:

1. New Utility Class: SpringContextAccessor

   • Implements ApplicationContextAware to set the application context automatically when the Spring container starts.
   • Provides a static method getBean(Class<T> beanClass) to retrieve beans from the application context.

2. Factory Method in OkapiRestTemplate

   • Introduces a static factory method build() for creating and configuring OkapiRestTemplate instances using a fluent API.

3. Unit Tests

   • Added SpringContextAccessorTest to ensure the correct retrieval of tenant properties bean.
   • Utilizes SpringBootTest with mock web environment for testing.

Rationale:

• Static Access to Beans: The SpringContextAccessor allows for easy and static access to Spring-managed beans, which is particularly useful for accessing tenant-specific properties across different parts of the application.

• Fluent API for OkapiRestTemplate: The factory method enhances the usability of OkapiRestTemplate by providing a clear and concise way to instantiate and configure it.

• Preventing Deserialization: Making the constructor of OkapiRestTemplate private prevents direct instantiation and deserialization, which enhances security by ensuring that instances are only created through the controlled factory method.

• Improved Test Coverage: The added tests ensure that the new functionality works as expected and integrates well with the existing application context.

Additional Changes:

• Minor test cleanup to improve code readability and maintainability.