class DropForeignKeyConstraintChange extends AbstractChange {
    private String baseTableCatalogName;
    private String baseTableSchemaName;
    private String baseTableName;
    private String constraintName;

    @DatabaseChangeProperty(mustEqualExisting ="foreignKey.table.catalog", since = "3.0",
        description = "Name of the database catalog of the base table")
    public String getBaseTableCatalogName() {
        return baseTableCatalogName;
    }

    public void setBaseTableCatalogName(String baseTableCatalogName) {
        this.baseTableCatalogName = baseTableCatalogName;
    }

    @DatabaseChangeProperty(mustEqualExisting ="foreignKey.table.schema",
        description = "Name of the database schema of the base table")
    public String getBaseTableSchemaName() {
        return baseTableSchemaName;
    }

    public void setBaseTableSchemaName(String baseTableSchemaName) {
        this.baseTableSchemaName = baseTableSchemaName;
    }

    @DatabaseChangeProperty(mustEqualExisting = "foreignKey.table",
        description = "Name of the table containing the column constrained by the foreign key")
    public String getBaseTableName() {
        return baseTableName;
    }

    public void setBaseTableName(String baseTableName) {
        this.baseTableName = baseTableName;
    }

    @DatabaseChangeProperty(mustEqualExisting = "foreignKey", description = "Name of the foreign key constraint to drop",
        exampleValue = "fk_address_person")
    public String getConstraintName() {
        return constraintName;
    }

    public void setConstraintName(String constraintName) {
        this.constraintName = constraintName;
    }

    @Override
    public SqlStatement[] generateStatements(Database database) {<FILL_FUNCTION_BODY>}

    @Override
    public ChangeStatus checkStatus(Database database) {
        try {
            return new ChangeStatus().assertComplete(!SnapshotGeneratorFactory.getInstance().has(new ForeignKey(getConstraintName(), getBaseTableCatalogName(), getBaseTableSchemaName(), getBaseTableCatalogName()), database), "Foreign key exists");
        } catch (Exception e) {
            return new ChangeStatus().unknown(e);
        }
    }

    @Override
    public String getConfirmationMessage() {
        return "Foreign key " + getConstraintName() + " dropped";
    }

    @Override
    public String getSerializedObjectNamespace() {
        return STANDARD_CHANGELOG_NAMESPACE;
    }
}


        return new SqlStatement[]{
                new DropForeignKeyConstraintStatement(
                        getBaseTableCatalogName(),
                        getBaseTableSchemaName(),
                        getBaseTableName(),
                        getConstraintName()),
        };    	
    
<methods>public void <init>() ,public liquibase.change.ChangeStatus checkStatus(liquibase.database.Database) ,public liquibase.change.ChangeMetaData createChangeMetaData() ,public boolean equals(java.lang.Object) ,public void finishInitialization() throws liquibase.exception.SetupException,public liquibase.change.CheckSum generateCheckSum() ,public liquibase.statement.SqlStatement[] generateRollbackStatements(liquibase.database.Database) throws liquibase.exception.RollbackImpossibleException,public boolean generateRollbackStatementsVolatile(liquibase.database.Database) ,public boolean generateStatementsVolatile(liquibase.database.Database) ,public Set<liquibase.structure.DatabaseObject> getAffectedDatabaseObjects(liquibase.database.Database) ,public liquibase.changelog.ChangeSet getChangeSet() ,public java.lang.String getDescription() ,public java.lang.String[] getExcludedFieldFilters(liquibase.ChecksumVersion) ,public liquibase.resource.ResourceAccessor getResourceAccessor() ,public java.lang.String getSerializableFieldNamespace(java.lang.String) ,public liquibase.serializer.LiquibaseSerializable.SerializationType getSerializableFieldType(java.lang.String) ,public java.lang.Object getSerializableFieldValue(java.lang.String) ,public Set<java.lang.String> getSerializableFields() ,public java.lang.String getSerializedObjectName() ,public java.lang.String getSerializedObjectNamespace() ,public int hashCode() ,public void load(liquibase.parser.core.ParsedNode, liquibase.resource.ResourceAccessor) throws liquibase.parser.core.ParsedNodeException,public void modify(liquibase.change.visitor.ChangeVisitor) throws liquibase.parser.core.ParsedNodeException,public liquibase.parser.core.ParsedNode serialize() throws liquibase.parser.core.ParsedNodeException,public void setChangeSet(liquibase.changelog.ChangeSet) ,public void setResourceAccessor(liquibase.resource.ResourceAccessor) ,public boolean shouldExecuteChange(liquibase.database.Database) ,public boolean supports(liquibase.database.Database) ,public boolean supportsRollback(liquibase.database.Database) ,public java.lang.String toString() ,public liquibase.exception.ValidationErrors validate(liquibase.database.Database) ,public liquibase.exception.Warnings warn(liquibase.database.Database) <variables>private static final java.util.regex.Pattern ALPHABET,protected static final java.lang.String NODENAME_COLUMN,private liquibase.changelog.ChangeSet changeSet