What is the intention of the program below?

This is the structure of the NAME_1:
````
class NAME_1:
    def __init__(
        self,
        value=None,
        successor=None,
        successors=[],
        predecessors=[],
        incoming_nodes=[],
        outgoing_nodes=[],
    ):
        self.value = value
        self.successor = successor
        self.successors = successors
        self.predecessors = predecessors
        self.incoming_nodes = incoming_nodes
        self.outgoing_nodes = outgoing_nodes
````

````
from collections import deque as Queue
def p2(startnode, goalnode):
    queue = Queue()
    queue.append(startnode)

    nodesseen = set()
    nodesseen.add(startnode)

    while True:
        NAME_1 = queue.popleft()

        if NAME_1 is goalnode:
            return True
        else:
            queue.extend(NAME_1 for NAME_1 in NAME_1.successors if NAME_1 not in nodesseen)
            nodesseen.update(NAME_1.successors)

    return False
```` Your answer should have exactly 10 paragraphs. Make sure that the last paragraph starts with the word "proactive" and that each paragraph is separated by two new lines.
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