Implement Node and NodeManager classes #10
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The Node class represents a node with an 'id' and 'parent', ensuring valid values through type hints and validation. It includes methods for initialization, string representation, and equality comparison. The NodeManager class manages a list of Node objects, with methods for retrieving, adding, and removing nodes. It includes a cascade removal feature, which ensures that nodes and their children are properly removed from the list. The class also validates that the input is a list of Node instances and prevents mutations to the original list.
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The Node class represents a node with an 'id' and 'parent', ensuring valid values through type hints and validation. It includes methods for initialization, string representation, and equality comparison.
The NodeManager class manages a list of Node objects, with methods for retrieving, adding, and removing nodes. It includes a cascade removal feature, which ensures that nodes and their children are properly removed from the list. The class also validates that the input is a list of Node instances and prevents mutations to the original list.