def __init__(self, in_channels, out_channels, activations=None):
        '''
        local_embedding: conv-bn-relu
        global_embedding: conv-bn-relu
        global_act: conv
        '''
        super(InjectionMultiSumCBR, self).__init__()

        self.local_embedding = ConvBNAct(in_channels,
                                         out_channels,
                                         kernel_size=1)
        self.global_embedding = ConvBNAct(in_channels,
                                          out_channels,
                                          kernel_size=1)
        self.global_act = ConvBNAct(in_channels,
                                    out_channels,
                                    kernel_size=1,
                                    norm=None,
                                    act=None)
        self.act = HSigmoid()

        local_embedding: conv-bn-relu
        global_embedding: conv-bn-relu
        global_act: conv
        
paddleseg/models/backbones/top_transformer.py