params class

self.baselineLength =  3

module

start = self.analysisYear - self.baselineLength

dagster

@solid(config_schema={"year":int,
    "region":str,
    "cover":str,
    "covername":str,
    "test":bool})
def run_prep_step_1(context):
    year=context.solid_config['year'],
    region=ee.FeatureCollection(context.solid_config['region']),
    cover=ee.Image(context.solid_config['cover']),
    covername=context.solid_config['covername']
    a = step1(year,region,cover,covername)
    prep_lc = a.prepare_script1()