Examlex
In addition to hiding the implementation details that the ordinary method of "separating implementation from interface" would hide, using a proxy class also hides:
Overhead Costs
General business expenses not directly attributable to creating products or services.
Departments
Distinct areas within an organization, each focusing on a specific aspect of the business operation, such as finance, marketing, or human resources.
Products
Goods or services offered by a business to the market.
Product Costs
The costs incurred by a company to manufacture or acquire a product which include materials, labor, and overhead.
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