def METHOD_NAME():
    x = np.ma.MaskedArray(data=['A'  , 'A' , 'A'  , 'B'  , 'B' , 'B' , ''   , ''  , ''  ],
                          mask=[False, True, False, False, True, True, False, True, False])
    df = vaex.from_arrays(x=x)
    value_counts = df.x.value_counts()
    assert len(value_counts) == 4
    assert value_counts['A'] == 2
    assert value_counts['B'] == 1
    assert value_counts[''] == 2
    assert value_counts['missing'] == 4
    value_counts = df.x.value_counts(dropmissing=True)
    assert len(value_counts) == 3
    assert value_counts['A'] == 2
    assert value_counts['B'] == 1
    assert value_counts[''] == 2
    value_counts = df.x.value_counts(dropna=True)
    assert len(value_counts) == 3
    assert value_counts['A'] == 2
    assert value_counts['B'] == 1
    assert value_counts[''] == 2